/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.icanci.snowstack.switchcase;

import cn.icanci.snowstack.Action;
import cn.icanci.snowstack.switchcase.exception.SwitchCaseInvalidActionException;
import lombok.Data;

/**
 * @author icanci
 * @date Created in 2021/05/23 18:22
 * @version 1.0
 */
@Data
public class SwitchEntranceMachine implements SwitchMachineExecute {
    private SwitchCaseEntranceMachineState state;

    public SwitchEntranceMachine(SwitchCaseEntranceMachineState state) {
        this.state = state;
    }

    /**
     * 执行
     * @param switchCaseAction action
     * @return 返回结果状态
     */
    @Override
    public String execute(Action switchCaseAction) {
        if (null == switchCaseAction) {
            throw new SwitchCaseInvalidActionException();
        }
        SwitchCaseAction action = (SwitchCaseAction) switchCaseAction;
        if (SwitchCaseEntranceMachineState.LOCKED.equals(state)) {
            switch (action) {
                case INSERT_COIN:
                    setState(SwitchCaseEntranceMachineState.UNLOCKED);
                    return open();
                case PASS:
                    return alarm();
            }
        }
        if (SwitchCaseEntranceMachineState.UNLOCKED.equals(state)) {
            switch (action) {
                case INSERT_COIN:
                    return refund();
                case PASS:
                    setState(SwitchCaseEntranceMachineState.LOCKED);
                    return close();
            }
        }
        return null;
    }

    private String refund() {
        return "refund";
    }

    private String close() {
        return "closed";
    }

    private String alarm() {
        return "alarm";
    }

    private String open() {
        return "opened";
    }
}
